#include <iostream>
using namespace std;

int main() {
	int x;
	cin >> x;
	for (int i = 1; i <= x; ++i) {
		for (int j = 1; j <= (x-i); ++j) cout << " ";
		for (int k = 0; k < 2*i-1; ++k) cout << "*";
		cout << endl;
		}
	for (int i = 0; i < x-1; ++i) {
		for (int j = 1; j <= i+1; ++j) cout << " ";
		for (int k = 0; k < 2*(x-i-1)-1; ++k) cout << "*";
		cout << endl;
	}
}